Re: [pygame] camera module: yuv, hsb, controllers and poc game

[Alexandre Quessy <alexandre@xxxxxxxxxx>]

Hello !
Where can I find the installation instructions for Mac OS X?
So far, my application doesn't detect any camera, though a friend had
it successfully working on his computer. Is OpenCV still needed ? Is
it supposed to work under OSX 10.4 or does it require 10.5?
Thanks !

a

2009/8/6 René Dudfield <renesd@xxxxxxxxx>:
> Hi,
>
> nice work!
>
> Also check out the apple performance profiling tools*.  They should let you
> see which objc functions are slow, where as the cprofile module just works
> for python exposed functions.
>
> You probably need to add -pg to the gcc flags so it adds profile information
> when it compiles.
>
> cu,
>
>
> * http://developer.apple.com/tools/sharkoptimize.html
>
>
>
> On Wed, Aug 5, 2009 at 1:24 PM, el lauwer <el.lauwer@xxxxxxxxx> wrote:
>>
>> Hello,
>>
>> Since, GSOX is drawing into a close I though I post an other update on my
>> progress.
>>
>> First of all, I have added support for yuv and hsb color output with
>> different color depths by using the color transform functions.
>>
>> I have looked into the flip controller, and the only function I could find
>> in the Quicktime API that should be able to do this is
>> SGSetChannelMatrix(channel, matrix) [0]. However when I try to set an mirror
>> matrix (a scale + translate matrix) it return an error that indicates that
>> the transformation matrix isn't supported.
>> Here is the code sniped:
>>
>> MatrixRecord matrix;
>> Fixed minusOne = Long2Fix(-1L);
>> Fixed PlusOne = Long2Fix(1L);
>> Fixed zero = Long2Fix(0L);
>>
>> ScaleMatrix(matrix, fixed1, minusOne, 0, 0);
>> TranslateMatrix(matrix, Long2Fix(self->boundsRect.right), 0);
>> SGSetChannelMatrix(self->channel, &matrix);
>>
>> You can find more context in the file src/camera_mac.m:133
>>
>> Nirav, since you joined Apple, maybe you can ask the good people in
>> Cupertino, how they intended this to be done :P
>>
>> In case there is no way that qt support this controller, should I just
>> keep them out and use transform.flip instead?
>>
>>
>> I have been testing the camera games by nirav (bouncy bal, pointillism,
>> reflectionrejection), pointillism runs very slow, about 2,5 frames a second,
>> and the other don't display an image frame. I haven't found the problem yet.
>>
>>
>> [0]
>> http://developer.apple.com/documentation/QuickTime/Reference/QTRef_SequenceGrabber/Reference/reference.html#//apple_ref/c/func/SGSetChannelMatrix
>>
>> Grtz
>
>



-- 
Alexandre Quessy
http://alexandre.quessy.net/